CVE-2026-78174

9.3 criticalEPSS 0.4%

Critical (9.3). EPSS 0.4% chance of exploitation in the next 30 days.

WatchGuard Dimension records unredacted session identifiers for logged-in users in its web UI diagnostic log. A low-privileged Dimension Administrator can retrieve this log and extract a Super Administrator's session token while that administrator is logged in, enabling account takeover.

Severity

CVSS 4.0

9.3 critical

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:N/SA:N

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 37% of CVEs (scores of 2026-10-31)
CWEs: CWE-200, CWE-269, CWE-532
Published: 2026-08-28
Modified: 2026-08-28
Record from: the NVD, synced 2026-10-19

References

https://psirt.watchguard.com/CVE-2026-78174

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